First signs of rolling over

I was in Lily's room going through cloths when I noticed her trying to roll over. I got so excited I went and grabbed my camera and prayed that she would still try so I could video it. I can't believe that she is almost 4 month old. Another big step she took this week was eating cereal. I really wouldn't call it eating but I now have put some in her bottles three different times and she hasn't had a problem with it. She was hungry all the time. Instead of being hungry every 3 hours it was turning into 2 hours. If I let her she would eat 8 oz of formula. I can't afford that.